The model of a common toaster includes four basic parts, which are lever, setting (that includes switch), spring and timer. The basic elements of a toaster are spring, catch, trip plate, electromagnet, browning control, bread rack, switch and others. Bread goes into the slot, every side of which is lined with two mica nichrome sheets. Slots have grades, which serve to center and press bread. Metal springs push out toasts once they are ready; this happens when the holder is close to the bottom of the mentioned slot. Springs are there to push toasts out when the set time runs out. I read a little bit more about this and others interesting topics here at https://manyessays.com/essays/book-reports
Toasters have specially designed switches built inside. Switches connect to the chassis with rivets, screws, or clips. The main switch of the toaster has a thermal fuse that protects it from burning. Two kinds of metal are used for switches; one of them heats quickly and another one slowly. This facilitates switch bending, as it disconnects the electricity and the spring pushes out the toast.
The heating elements of the toaster usually represent bimetallic strips made of copper and steel. Aluminum is the main metal used to design a calibrating spindle. The heating element is made of nichrome wire and hardened steel is the main component of a spring. A shell is made of plastic. The best suggestion for a shell is porcelain with plastic.
The parts of a common toaster are made of various types of metal and plastic inclusions. The plastic cases must be heat-resistant and in order to achieve that effect, the plastic includes coal and petroleum compounds. This also helps to make raw materials smoke suppressant and flame redundant. Aluminum is the most common metal used to make a metal toaster. Another common metal is mica, as it is resistant to fire and its main components include aluminosilicate minerals that are flat sheet and hold the nichrome wire. Those are the best suggestions to use in toaster production.